lti.py

  3 def get_or_create_lti_user(tool_provider):
  2     email = tool_provider.get_param('lis_person_contact_email_primary')
  1     name = tool_provider.get_param('lis_person_name_full')
4       userid = tool_provider.get_param('user_id')
  1     if userid is None or userid == "" :
  2         raise InvalidLTIRequestError('USERID NOT SENT BY CANVAS')
  3     if email is None or email == "":
  4         raise InvalidLTIRequestError('EMAIL NOT SENT BY CANVAS')
  5
  6
  7     role = get_role(tool_provider)
  8     lti_username = hashlib.sha256(userid).hexdigest()[0:30]
  9     try:
 10         user = User.objects.get(username=lti_username)
 11
 12     except User.DoesNotExist:
 13         print 'creating a new user'
 14         email = email.rstrip('\x0e')
 15         user = User.objects.create_user(lti_username, email)
 16         user.first_name = name
 17         user.set_unusable_password()
 18         #profile = LTIProfile.objects.create(django_user=user, external_userid=userid, name=name, email=email, roles=role)
 19         try:
 20             profile = LTIProfile.objects.get(email=email)
 21         except ObjectDoesNotExist:
 22             canvas_pk = tool_provider.custom_params['custom_canvas_user_id']
 23             profile = LTIProfile.objects.create(name=name,external_userid=userid,email=email, canvas_pk=canvas_pk, roles=role)
 24         profile.roles = role
 25         profile.django_user = user
 26         profile.external_userid = userid
 27         profile.save()
 28
 29     except User.MultipleObjectsReturned:
 30         user = get_object_or_404(User, username=lti_username)
 31
 32     user.backend = 'django.contrib.auth.backends.ModelBackend'
 33     user.save()
 34     return user